Formation of soluble microbial products by activated sludge under anoxic conditions

Xie, Wen-Ming, Ni, Bing-Jie, Zeng, Raymond J., Sheng, Guo-Ping, Yu, Han-Qing, Song, Jing, Le, De-Zhi, Bi, Xue-Jun, Liu, Chang-Qing and Yang, Min (2010) Formation of soluble microbial products by activated sludge under anoxic conditions. Applied Microbiology and Biotechnology, 87 1: 373-382. doi:10.1007/s00253-010-2563-x


Author Xie, Wen-Ming
Ni, Bing-Jie
Zeng, Raymond J.
Sheng, Guo-Ping
Yu, Han-Qing
Song, Jing
Le, De-Zhi
Bi, Xue-Jun
Liu, Chang-Qing
Yang, Min
Title Formation of soluble microbial products by activated sludge under anoxic conditions
Journal name Applied Microbiology and Biotechnology   Check publisher's open access policy
ISSN 0175-7598
1432-0614
Publication date 2010-06
Sub-type Article (original research)
DOI 10.1007/s00253-010-2563-x
Volume 87
Issue 1
Start page 373
End page 382
Total pages 10
Place of publication Heidelberg, Germany
Publisher Springer
Language eng
Formatted abstract
In this work, both experimental and modeling approaches are used to explore the formation of soluble microbial products (SMP) by activated sludge under anoxic conditions. With substrate consumption, the SMP concentration increases gradually. Utilization associated products (UAP) are the main fraction of SMP when substrate is present; whereas biomass associated products (BAP) are the major content of SMP as substrate is completely consumed. The fraction of the accumulated SMP accounts for 3-4% of initial organic substrate. Three dimensional excitation emission matrix analysis results indicate that the SMP concentration increases in the denitrification process. The accumulation of nitrite up to 22.6 mg/l under anoxic conditions has no significant effect on the SMP formation. With a consideration of SMP formation under anoxic conditions, an ASM3-based denitrification model is developed. The results show that the developed model is able to capture the relationship between the SMP formation and the substrate consumption by activated sludge in the denitrification process
Keyword Activated sludge
Denitrification
Soluble microbial products (SMP)
Extracellular Polymeric Substances
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Advanced Water Management Centre Publications
 
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